[dpdk-dev] [PATCH v3 5/5] devargs: parse global device syntax

[Xueming Li]

When parsing a devargs, try to parse using the global device syntax
first. Fallback on legacy syntax on error.

Example of new global device syntax:
 -a bus=pci,addr=82:00.0/class=eth/driver=mlx5,dv_flow_en=1

Signed-off-by: Xueming Li <xuemingl at nvidia.com>
---
 lib/librte_eal/common/eal_common_devargs.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/librte_eal/common/eal_common_devargs.c b/lib/librte_eal/common/eal_common_devargs.c
index b4dcb0099c..236e14824e 100644
--- a/lib/librte_eal/common/eal_common_devargs.c
+++ b/lib/librte_eal/common/eal_common_devargs.c
@@ -102,7 +102,6 @@ rte_devargs_layers_parse(struct rte_devargs *devargs,
 		layers[i].str = s;
 		layers[i].kvlist = rte_kvargs_parse_delim(s, NULL, "/");
 		if (layers[i].kvlist == NULL) {
-			RTE_LOG(ERR, EAL, "Could not parse %s\n", s);
 			ret = -EINVAL;
 			goto get_out;
 		}
@@ -199,6 +198,12 @@ rte_devargs_parse(struct rte_devargs *da, const char *dev)
 	if (da == NULL)
 		return -EINVAL;
 
+	/* First parse according global device syntax. */
+	if (rte_devargs_layers_parse(da, dev) == 0 && da->bus && da->cls)
+		return 0;
+
+	/* Otherwise fallback to legacy syntax: */
+
 	/* Retrieve eventual bus info */
 	do {
 		devname = dev;
-- 
2.25.1